EP 1659352 A2 20060524 - Expansion device
Title (en)
Expansion device
Title (de)
Expansionsvorrichtung
Title (fr)
Dispositif d'expansion
Publication
Application
Priority
- JP 2004335225 A 20041119
- JP 2004375158 A 20041227
- JP 2005045214 A 20050222
- JP 2005178718 A 20050620
Abstract (en)
The expansion device comprises a differential pressure valve 2, the valve lift of which is controlled according to the differential pressure across the expansion device, and a temperature-sensing section 3 for further controlling the valve lift according to temperature. A piston 8 integral with a valve element 6 has a larger outer diameter than the valve element 6. The piston 8 defines a pressure-adjusting chamber 11 into which the inlet pressure is introduced via a pressure passage 12. When the inlet pressure becomes high, the differential pressure valve 2 operates in valve opening direction. The temperature-sensing section 3 contains a bellows 14 that can axially expand and contract, filled with a wax 16 having a large coefficient of thermal volumetric expansion such that the differential pressure valve 2 operates in valve closing direction when the inlet temperature becomes high.
IPC 8 full level
F25B 41/06 (2006.01); G05D 16/06 (2006.01)
CPC (source: EP KR US)
F25B 41/335 (2021.01 - EP KR US); G05D 16/103 (2013.01 - EP KR US); G05D 23/022 (2013.01 - EP KR US); F25B 2309/06 (2013.01 - EP KR US); F25B 2341/063 (2013.01 - EP KR US)
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
EP 1659352 A2 20060524; EP 1659352 A3 20060531; JP 2006266660 A 20061005; KR 20060056255 A 20060524; US 2006107673 A1 20060525
DOCDB simple family (application)
EP 05024837 A 20051114; JP 2005178718 A 20050620; KR 20050110485 A 20051118; US 26026405 A 20051028